Cause : Control Power Supply Voltage Fault comes when voltage is too low for the control drive input power. undervoltage of the control circuit when running. This fault also comes when external load connected pulling down the Drive power supplies.

1. Control power supply wiring is damaged.
2. Cycle power to the drive. Check if the fault reoccurs.
3. If the problem continues, replace the control board, the entire drive, or the control power supply.